Gyratory crusher



J. E. KENNEDY GYRATORY CRUSHER July 23, 1940.

Filed 001:. 7, 1937 l l l I W /T 2 sheets-shet 1 INVENTOR J. E. Kennedy 6 ATTORNEY Jul 23, 1940. a ED 2,208,639

GYRATORY CRUSHER Filed 001:. 7, 1957 2 Sheets-Sheet 2 gZ E ZQ g INVENTOR f. E. Kwrfledy ATTORNEY Patented July 23, 1940 UNITED sTATEs GYRATORY CRUSHER Joseph E. Kennedy, New York, N. Y., assignor to Kennedy-Van Saun Mfg. & Eng. Corporation,

New York, N. Y., a corporation of Delaware Application October 7, 1937, Serial No. 167,729

3 Claims.

' This invention relates tocrushers for reducin material, such as ore, rock and the like materials, and relates particularly to gyratory crushers embodying a gyratory crushing member and a fixed Sir-crushing member arranged in encircling rela- 'orshell adapted to be mounted and supported tion to and spaced from the gyratory crushing member.

In gyratory crushers there is provided a frame consisting of a lower supporting frame member upon a suitable foundation, a one piece annular member or shell superposed to and supported from the lower frame member or shell, and a spider member having an annular portion where- 'by it is supported upon the annular frame member or shell with arms converging therefrom merging with an axial hub portion, the frame members being secured together in assembled position. -The gyratory crushing member is sus- --"pended from one end in the hub of the spider member axially of the frame and mounted at the opposite end eccentrically'in a bushing rotatably mounted in the lower member of the crusher frame concentrically thereof. The annular ainframe member or shell serves as a carrier for the 351M130 substitute a new crushing member or concaves or otherwise, it is necessary in order to remove the concaves or crushing member to fuse the material, such as ,zinc, filled in between the opposed faces of the concaves or crushing member and Qnthe shell or carrier therefor, and then a resetting of the new crushing member or concaves and filling of thematerial to hold the concaves to the shell or carrier between the concaves and shell. Furthermore, the gyratory movement of Bl the gyratory crushing member or head in trans mitting the crushing forces to the concaves tends to impart rotative movement to the concaves and a shearing of the material filled between the opposed faces of the concaves and carrier therefor. It is the object of the present invention to provide an improved construction and arrangement of the annular frame member or shell constituting the carrier for the crushing concave and an improved constructed and arranged crushing 5,, nember or concave to overcome the above disadvantages by providing a one piece annular crushing concave or member and a separable sectional carrier shell for the crushing member or concave arranged with means to firmly draw the fio lcarrier to the. crushing, member or concave to hold and support the same without filling a holding material for the crushing member or concave between the opposed faces of the crushing member or concave and carrier therefor whereby -the crushing forces transmitted to the crushing member or concave will be transmitted directly to and taken up by the carrier as well as facilitating the mountingand dismounting of the crushing member or concave from its carrier.

Other objects and advantages of the invention will hereinafter appear.

In thedrawings accompanying and forming a part of this application,

Figure l is a longitudinal sectional view of a gyratory crusher illustrating an embodiment of the invention.

Figure 2 is a side elevation, on an enlarged scale Figure 4 is a plan view of the carrier for the crushing member or concave.

Figure 5 is a side elevation of the carrier for the crushing member or concave looking at the right of Figure 4; and

Figure 6 is a fragmentary sectional view to show the arrangement and supporting of the crushing member or concave by its carrier, the section being taken substantially on the line 66 ill of Figure 3 looking-in the direction of the arrows.

Anembodiment of the invention is shown in the drawings in connection with a gyratory crusher wherein the operative parts are mounted in a frame, comprising a lower supporting frame or shell member 6 adapted to be mounted on a suitable foundation and having an annular portion at the top, an upper frame member in the form of -a spider having an annular portion 1 with arms 8 converging therefrom and merging in a hub portion 9 axially of the crusher frame,

and a carrier for a crushing element interposed of a mantle Ill is mounted on a core it carriedon a conicalportion of or integral with asha-ft J of the frame.

extending the upper end portion of the shaft through the hub portion of the spider and. suspending the shaft from said hub by a collar l5 7 adjustably mounted on the end of the shaft resting on springs l6 circumferentially spaced about the shaft and supported on a collar engaging a suspending ring or sleeve l8 within a bushing IS in the hub and supported upon a wearing ring 20 supported in a socket in the spider hub 9. The ;;sleeve |8 in the bushing l9 and said bushing are arranged to permit of gyratory movement of the shaft about the axis of the crusher frame. The opposite end of the shaft I2 is connected to driving means to transmit the rotary movement of the driving means to gyratory movement of the shaft and crusher head. The driving means is shown in a conventional manner at M as an electric motor the rotor of which is rotatably supported by the frame independent of the shaft and operatively connected to the shaft through a sleeve rotatably mounted axially in the frame member 6 and in which sleeve the shaft is loosely engaged eccentrically of the axis The eccentric sleeve connection with the driving means is not shown since it does notnconstitute an essential feature of the present invention and is well known in the art.

The carrier for the crushing member or concave comprises laterally separable sections, shown as two substantially semi-circular sections 2|, 22. Each of the sections 2|, 22 is arranged at the ends with a portion of increased thickness and less length than the length of the sections to provide the same with outwardly extending reinforcing lug portions 23 having openings 24; extended therethrough and equidistantly spaced from the ends of the sections. The end faces of the sections are substantially flat with vportions extending transversely thereof through which the openings 24 are extended, as at 25, projecting slightly forward of the portions 26 intermediate and at the opposite sides of said portions 25. The sections 2|, 22 are adapted to be drawn toward each other and secured together by suitable means ,and shown as tie.rods extended through the registered openings 24 in the sections with nuts threaded onto the projecting ends of the tie rods, as at 21, the intermediate portions 26 being provided with recesses or bores, as 28, adapted for the slidable engagement of alining pins 29. The opposite ends of the sections 2|, 22 are externally reduced, as at 30, Figures 4 and 5, the reduced Wall portion 30 at one end being adapted to have sliding engagement with an annular wall of an annular recess extended into the corner of the end wall and inner face at the top of the bottom frame member 6, as at 3| in Figures 1, 2 and 6, and

--.the reduced wall portion at the opposite end of "the sections 2|, 22 adapted to have sliding engagement with an annular wall of an annular recess in the annular wall portion of the spider member, as at 32. The reduced wall portions 30 at the opposite ends of the sections 2|, 22 are preferably slightly inclined inwardly to the ends of the sections, and the walls 3|, 32 of the recesses in the top of the lower frame member or shell 6 and the annular portion 1 of the spider member are correspondingly formed, whereby the aaoaesd if Y wall 30 at the lower end of the sections 2|, 22 will firmly engage the recess wall 3| in the lower. frame member 6, and the wall 32 of the recess in the annular portion of the spider member will'firmly engage the wall 30 at the'upper end 5 of the connected sections 2|, 22. The sections 2|, 22 are arranged with a recess in the corners at the opposite ends and inner face thereof with the one wall extending parallel to the axis of the sections, as at 33, for a purpose hereinafter 10 described.

Each'of the sections 2|, 22 is arranged intermediate the ends of increased thickness to reinforce and strengthen the sections and provide the sections with an inwardly projecting arcu- 15 ate portion midway the-ends the face of which arcuate portions is flat and extends substantially parallel to the axis of the sections, as at 34.

The crushing concave comprises an annular, member 35 of wear resisting material, such 2.5.20 manganese steel, said crushing member being of a length substantially equal to the length-of. the carrier sections 2|, 22. The one face of said crusher concave and constituting the crushing face is arranged with a portion 36 intermediate the ends extending substantially parallel to the. axis thereof, and the portions of. said face at the opposite ends of said portion 36 being prefere ably of the same length and diverging at substantially the same angle from said intermediate: portion 36 to the ends of said member, as at. 31.,

The crushing member or concave carried: by the carrier sections 2|, 22 is substantially of. uniform thickness. At the opposite .ends it is;

arranged with an annular rearwardly extending .35"

flange adapted to engage in the recess 33 at the corners of the inner face and opposite ends of v the sections 2|, 22 with the peripheral wall ex-., tending substantially parallel tothe axis of the crushing concave and engaging the arcuate wall 40 of the recesses 33 and thereby supporting the crushing member or concave 35 at the ends by and in contact or engagement with the carrier sections 2|, 22. A portion of the crushing concave extending rearwardly-from intermediate they ends thereof and opposite the portion 36 of the crushing face is adapted toengage directly with the face 34 of the inwardly projecting portion 34 of the sections 2|, 22, as clearly shown in Figures 2and6. ..50 The face of the mantle ID of the crushing; head is arranged to form in conjunction with the portions 36, 31 of the crushing face of thecrushin-g concave 35 a crushing chamber tapering downwardly the angle of the crushing. faces of=5 which chamber decrease progressively down-- wardly from the top or inlet end to the bottom or outlet end of the crushingchamber and said i-. bottom end diverging outwardly fromthe. axis-of the crusher. i s To center the crushing member or concave in a. the carrier sections 2|, 22 when vassemblingthesame, centering pins are provided and adapted to engage in recesses or bores in the faces 34 of each frame section 2|, 22 midway the ends thereof and in recesses or bores arranged diametrically- I opposite in the portion of the crushing concave I 35 opposed to the portion 34 of thecarrier sec-. tions 2|, 22, as shown at 38 in Figures 3 and 6.

To further reinforce and strengthen'the sections2|, 22 each of said sections is provided with outwardly extending portions 39 spaced longi-="' tudinally midway the ends ofthe' sections, shownin Figures 3,5 and'6. l

The. crushing member or concave 35 may be assembled in the carrier sections 2|, 22 prior to mounting the same in the crusher frame when said assembled unit is assembled in the lower frame member 6 by engaging one reduced end 30 of the assembled sections in the recess in the top of the lower frame member with the face of said reduced portion 30 engaging the outer wall of said recess when the spider member is mounted on the assembled sections 2|, 22. To facilitate mounting of the crusher concave 35 assembled in the sections 2!, 22 upon the lower frame member 6, one of the sections 2!, 22, or both of said sections, and shown as the section 2| in Figure l, is arranged with a laterally extending projection 68 adapted for connection thereto of a cable or chain of a hoisting means. It will be obvious that by loosening the nuts 21 on the tie rods connecting the sections 2%, 22 that the crushing member or concave 35 may be readily removed therefrom to reverse the position of the crushing member or concave or to substitute another crushing member or concave, and that said sections-2i, 22 may be drawn into firm engagement with the reinforcing flanges at the ends of the crushing concave and the laterally extending portion intermediate the ends thereof and thereby rigidly support the crushing member or concave. To assure intimate and firm engagement of the crushing member 35 with its carrier sec tions the outer wall of the recesses 33 and the face of the reduced portions at the ends of the sections 2!, 22, as well as the face of the flanges at the opposite ends and intermediate portion. of increased thickness of the crushing member or concave are machined or ground. The recess in the annular portion of the spider member and the annular recess in the top of the bottom frame member or shell are of the same diameter, and the reduced outer portions 30 at the ends of the sections 2!, 22 circumscribe a circle having a diameter substantially the same as said recesses 3 i, 32 in the bottom frame shell and spider member whereby the sections 2|, 22 may be reversed end to end between the lower frame shell and spider member.

Having described my invention, I claim:

1. In a gyratory crusher, a frame including a lower frame member having an annular upper end wall and a spider member having an annular wall portion at the lower end, said annular portions of said frame and spider members having like recesses extended into the inner face and end thereof, an annular member comprising laterally separable sections removably mounted and supported in the lower frame and spider members with the ends engaging in the recesses in the annular wall of said frame and spider members, each section of said annular member having like arcuate recesses of angular form in cross section extended into the inner face and ends thereof with one wall of the recesses of angular form arranged concentric of the annular member, and each section having an inwardly projecting portion midway the ends the inner face of which is arranged in an are having a radius less than the arcuate wall of the recesses, and an annular crushing member adapted to be clamped and supported within said sections of the annular member having outwardly projecting portions at and intermediate the ends thereof in engagement with the arcuate face of the inwardly projecting portion and the recesses to support the crushing member within the sections of said annular member.

2. In a gyratory crusher, a frame including a lower shell having an annular wall portion at the top with a recess of angular form in cross section extended into the top and inner face thereof with the outer wall of the recess diverging outwardly, and a spider member having an annular wall portion with an annular recess of angular form incross section extended into the end and inner face thereof with the outer wall of the recess diverging outwardly, a pair of releasably connected and laterally separable sections of semicircular form having a portion at each end arranged to conform with and engage the diverging wall of the recesses in the top of the lower shell and annular wall portion of the spider member to mount and support said sections in and between the lower shell and spider member, and each of said sections arranged with a recess extended into the ends and inner face thereof and having an inwardly projecting por tion midway the ends arranged with an arcuate face having a less radius than the recesses in the ends and face of the sections, means to draw the spider member to the lower shell and clamp the separable sections between the same, a onepiece annular crushing member arranged with a face having a portion intermediate the ends of uniform diameter and an annular portion projecting outwardly from the rear of said portion of the face adapted to engage the annular face of the inwardly projecting portion of the sections of the annular member, and portions of said face diverging outwardly from said intermediate portion to the ends of the crushing member arranged with; rearwardly extending flanges at the ends adapted to engage in the recesses in the face and ends of the sections of 40 the annular member to support the crushing member from said sections, and a crushing member within the annular crushing member supported in the frame to have gyratory movement relative to the annular crushing member.

3. In a gyratory crusher, a lower supporting frame member, an upper spider member, an annular member comprising laterally separable sections removably supported by and between said lower frame and spider members, said sections each having arcuate recesses in the inner face at the opposite ends forming a continuous circular recess in the assembled sections, and each section having an inwardly projecting portion substantially midway the ends arranged with an arcuate face forming a continuous circular face in the assembled sections having a radius less than the end recesses, and a one piece annular crushing member the face of which is arranged of uniform diameter intermediate the ends and portions diverging outwardly from said intermediate portion to the opposite ends, and said crushing member arranged with outwardly extending annular portions at the opposite ends and midway the ends adapted to engage and support the crushing member from the recesses in the ends of the sections of the annular member and the inwardly projecting portion midway the ends of said sections.

JOSEPH E. KENNEDY. 

